Appendix A	North Coast Air Basin - County: Del Norte					Table A-55														

OZONE (ppm)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Peak 8-Hour Indicator (State)		0.055	0.051	0.064	0.064	0.061	0.059	0.058	0.055											
Avg. of 4th High 8-Hr. in 3 Yrs (Nat)			0.042	0.046	0.044	0.051	0.05	0.051	0.049											
Peak 1-Hour Indicator (State)		0.059	0.057	0.066	0.066	0.064	0.062	0.059	0.061											
4th High 1-Hr. in 3 Yrs2		0.06	0.059	0.07	0.06	0.07	0.06	0.06	0.06											
Max. 8-Hr. Concentration	0.038	0.06	0.042	0.06	0.051	0.061	0.053	0.061	0.052											
Maximum 1-Hr. Concentration	0.04	0.068	0.05	0.07	0.06	0.07	0.06	0.064	0.056											
Days Above State 8-Hr. Std.	0	0	0	0	0	0	0	0	0											
Days Above Nat. 8-Hr. Std.	0	0	0	0	0	0	0	0	0											
Days Above State 1-Hr. Std.	0	0	0	0	0	0	0	0	0											

PM10 (ug/m3)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Max. 24-Hr. Concentration (State)									41	42	58	50	42	46	48	39	37	44	31	43
Max. 24-Hr. Concentration (Nat)									41	42	58	48	39	44	46	39	39	42	30	41
Max. Annual Average (State)											20.8		18.4	17.6	17.3			18.6		
Max. Annual Average (Nat)									20.5	15.8	20.9	24.7	17.3	17.4	16.9	18.7	14.1	17.9	18	11.3
Calc Days Above State 24-Hr Std											6		0	0	0			0		
Calc Days Above Nat 24-Hr Std									0		0		0	0	0	0		0		

PM25 (ug/m3)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Max. 24-Hr. Concentration (State)																				
Max. 24-Hr. Concentration (Nat)																				
98th Percentile of 24-Hr Conc.																				
Annual Average (State)																				
Avg. of Qtrly. Means (Nat)																				

CARBON MONOXIDE (ppm)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Peak 8-Hr. Indicator																				
Max. 1-Hr. Concentration																				
Max. 8-Hr. Concentration																				
Days Above State 8-Hr. Std.																				
Days Above Nat. 8-Hr. Std.																				

NITROGEN DIOXIDE (ppm)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Peak 1-Hr. Indicator																				
Max. 1-Hr. Concentration																				
Max. Annual Average (Nat)																				

SULFUR DIOXIDE (ppm)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Peak 1-Hr. Indicator																				
Max. Annual Average																				
Max. 24-Hr. Concentration